Seed Of Defense

Pretty Betsy
Seed of Life
Seed of Magic
Seed of Strength
Seed of Deftness
Seed of Agility
Seed of Sorcery
Seed of Therapeusis

Masayuki Method

Preparation: 3
Spawn: 4
Drop: 4

Preparation

[MC] [Mage] [No weapon] [Auto-Restore-MP (Optional)]
[PAL1] [Gladiator (Recommended)] [Spears] [Auto-Restore-MP (Optional)]
[PAL2] [Gladiator (Recommended)] [Staves] [Auto-Restore-MP (Optional)]
[PAL3] [Gladiator (Recommended)] [Whips] [Working with Whips] [Auto-Restore-MP (Optional)]

[Lv.99 Character] [Thief's Theory]

Spawn

1. Arrange your Ruby Path of Doom Lv.87 (Masayuki) to one of the Treasure Map page's BOTTOM and set it out.
2. Enter Gortress.
3. Exit Gortress -> Move 1-1.5 steps LEFT (which makes PAL1 facing on you) -> Open the "Menu - Items - Treasure Maps" page ASAP -> Close it IMMEDIATELY.
4. Move Right -> Up to encounter Lethal Armour.

Battle

1 monster - Normal

[MC] BOOM
[PAL1] Multithrust
[PAL2] Defend
[PAL3] Defend

2 monsters - Normal

[MC] BOOM
[PAL1] Defend
[PAL2] Crushed Ice
[PAL3] Defend

1 monster - Too stunned to move

[MC] BANG
[PAL1] Defend
[PAL2] Defend
[PAL3] Twin Dragon Lash

2 monsters - Too stunned to move

[MC] BANG
[PAL1] Defend
[PAL2] Defend
[PAL3] Serpent Bite

Usugura Method

Preparation: 3
Spawn: 1
Drop: 3

2nd Gen Method

Preparation: 4
Spawn: 2
Drop: 6

Preparation

[MC] [Martial Artist (Recommended)] [Gusterang] [Auto-Restore-MP (Optional)]
[PAL1] [Warrior (Recommended)] [Staves] [Rousing Ring]
[PAL2] [Warrior (Recommended)] [Whips] [Rousing Ring]

No PAL3.

[Lv.99 Character] [Thief's Theory]

Spawn

1. Arrange your 2nd Gen Map to one of the Treasure Map page's BOTTOM and set it out.
2. Enter Gortress.
3. Exit Gortress -> Move 2-3 steps down-right to the square floor's Row-3 Col-3's EDGE (the same position as Seed of Agility 2nd Gen USA/EUR) -> Open the "Menu - Items - Treasure Maps" page ASAP (Do not wait for all characters stopping moving!) -> Close it IMMEDIATELY.
4. Move UP -> If Lethal Armour appears, move right immediately to encounter it.

Battle

If attack gets guarded, repeat once when Too stunned to move happened, or just flee on normal situation.

Rotated Animation

1 monster - Too stunned to move (1 seed)

[MC] Defend
[PAL1] Defend
[PAL2] Lashings of Love

2 monsters - Normal (2 seeds)

[MC] Crosscutter Throw
[PAL1] Attack or Defend
[PAL2] Attack or Defend

If PAL1-PAL2 Attack don't work, try Defend. TBH I don't know why Defend increases success rate in EU cart environment.
Flee when unlisted pattern comes.

Face-to-face Animation

1 monster - Normal (1 seed)

[MC] Defend
[PAL1] Attack
[PAL2] Defend

This pattern's success rate is low in EU cart environment.

1 monster - Too stunned to move (1 seed)

[MC] Defend
[PAL1] Defend
[PAL2] Lashings of Love

2 monsters - Too stunned to move (2 seeds)

[MC] Defend
[PAL1] Party Pooper
[PAL2] Defend

If PAL1 isn't a Warrior, then PAL1's STR must be 400+. Otherwise Party Pooper cannot defeat the 2nd monster.
Flee when unlisted pattern comes.

The 2nd Gen method is discovered by Tosiyuki.